HydroBASINS lev08 watershed · #1080031990
Bassin de Oued Oum Zessar
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 4 administrative regions : Beni Khedache, Mareth, Médenine Nord, Sidi Makhlouf
Sub-basin area
613,8km²
Upstream area
613,8km²
Discharge
1,88m³/s
Mean elev.
171m
Administrative coverage
4 dept-equivalent regions (GADM L2)
- 259.9 km²42.4% of basin
- 185.1 km²30.2% of basin
- 109.9 km²17.9% of basin
- 57.2 km²9.3% of basin
2 intersecting protected areas
Wetland of International Importance (Ramsar Site)
39.41 km² overlap
Wetland Zone of National Importance
39.41 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
110 distinct species · 285 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Oued Oum Zessar : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 3 types (connectance 10.3%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
19,9°C
Annual rain
174mm
Moisture idx (CMI)
-0,88
Runoff
100mm/an
PET
1 407mm
AET
148mm
Mean slope
2,8°
Water table
671cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)